45% of 40 is 18% of what number?
100
0.45 * 40 = 18
0.18x = 18
x = 18 / 0.18
x = 100
Correct
0.45 * 40 = 18
0.18x = 18
x = ?
The answer is 100
The number is equal to 100
hope that helps
To find out what number 18% of a given number is, we need to set up a proportion.
Let's denote the unknown number as "x". The proportion can be set up as follows:
45% of 40 is equal to 18% of x.
Mathematically, this can be written as:
(45/100) * 40 = (18/100) * x
To solve for x, we can cross-multiply:
(45/100) * 40 = (18/100) * x
(45 * 40) / 100 = (18 * x) / 100
1800 / 100 = 18x / 100
Divide both sides by 18 to isolate x:
1800 / 18 = x
Simplifying further:
100 = x
So, 18% of 100 is 18.
Therefore, 45% of 40 is equal to 18% of 100.